Annealing-box.



F.0ORDES. ANNEALING BOX.

APPLIUATION FILED NOV. 6, 1908.

Patented Jan. 26, 1909.

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CORDES, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO UNITED ENGINEERING & FOUNDRY COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANiA.

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Specification of Letters Patent. 1

- Patented Jan. 26, 1909.

Application filed meat... 6, 1908. Serial No. 461,380.

To all whom it may'concern: Be it known that I, FRANK Connns, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful In; rove-. ment in Annealing-Boxes, of which 1; e following is a full, clean, and exact description, reference being had to the accompanying drawings,forniing part of this specification, inwhich'-;"

' Figure l'is a top. plan view partly-broken away of an annealing box embed lnventlon; Fig.2 1s a sale new of t e same, also partly broken away; Fig. 3'is a view partly in end elevation and partly in vertical section;. Fig. 4 is a plan view partly broken away showing; a modification; and Fig. 5 is a detail view ofj'a portion of Fig.4.

My invention has relation to annealin boxes, and is designed to provide a novel construption of box adapted to withstand severe service and which, by reason of its peculiar/construction, will be more durable in service than the boxes heretofore used.

The'present invention is more specifically designed as an improvement upon-annealing box described and claimed in my pending application, Serial No. 438,320, filed June 13, 1908; and like the boxdescribed andclaimed in that application, it is cast in a single integral piece, preferably of steel, with its top arranged in the form of a series of arches of such shape as to be self-support mg- The partinnlar feature of the resent invention consists in providing a ox of this character with vertical stiffening ribs at its sides in line with the low portions of the arched top, thereby providing additional supporting means and greatly stiffening the construction of the box.

Referring first to the form of box shown in Figs. 1, 2 and 3, the numeral 2 designates the body of the box which is preferably cast in a single integral piece with closed side and end portions and having a closedintegral top com osed of a series of arched domes 3. In tlie form shown in these figures, these domes are in the form of groined arches, being arched both transversely and as shown, thereby forming .a dome which is self-su porting against a tendency to collapse. ,lhe" we may be further. strengthened by means of the are terior ribs 4 which act as inverted trusses. These ribs are placed between adjacent arches-and extend transversely of the box with lateralbranches5 which join the adjacent exterior walls of the arches.

In accordance with my resent invention, I provide the side walls 0 the box directly underneath the ends of the ribs 4 with stiffening ribs 6 which extend vertically preferably the entire ,height of the box; In order to avoid increase'in the thickness of the side walls of the box by the rovision of these ribs which increase would ead to difficulties in casting due to thevariatinns inthe section of metal at different points and the liability resulting therefrom of internal strains being consistingof simple outward swells in the 7 side walls of the box as shown. In the modidomes 3,, instead of being in theform of groined'arches, consist of simple transversely extending arches, my invention being applicable to both forms of arched top. B t e provision-of these vertical stiffening ri s in the wide walls ofthe box adjacent to the low points of the arches, any tendency of the box to collapse. is prevented, these ribs not only forming an additional support for the arches,

bull;l also materially strengthening the side wa s.

It will be understood that the modified form of strengthening rib shown in Figs. 4 and 5 is equally applicable to both forms of arched to s. r

What claim is 1. An annealing box formed as an integral casting and having its top portion consisting of a plurality of arches or domes, the side walls of the box being provided with vertical stiffening ribs intermediate the arches or ing transversely of the box intermediatethe 110 set up in the casting, these ribs preferably arches or domes, and the side Walls of the box having vertical stiffening ribs underneath the end portions of the ribs or trusses; substantially as described.

4. A cast steel annealing box, having an integral top formed by a plurality of transversely extending domes or arches, and having its side Walls formed intermediate of the domes or arches with vertical exteriorly projecting stiffening ribs; substantially as described. v

5. A cast steel annealing box having an integral top formed by a plurality of domes, exterior strengthening ribs or trusses extendemeoe ing transversely of the box intermediate the arches or domes, and outwardly projecting vertical stiffening ribs in the side Walls of the box underneath the ends of the transverse ribs or trusses, said stiffening ribs having inwardly extending reinforcing projections; substantially as described.

In testimony whereof, I have hereunto set my hand.

FRANK CORDES.

Witnesses:

R. W. TENER, CHARLES BARNETT. 

